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Submission #474399

# Submission time Handle Problem Language Result Execution time Memory
474399 2021-09-18T07:29:21 Z Lam_lai_cuoc_doi Job Scheduling (IOI19_job) C++17
100 / 100
 269 ms 17744 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;

template <class T>
void read(T &x)
{
    x = 0;
    register int c;
    while ((c = getchar()) && (c > '9' || c < '0'))
        ;
    for (; c >= '0' && c <= '9'; c = getchar())
        x = x * 10 + c - '0';
}

constexpr bool typetest = 0;
constexpr int N = 2e5 + 5;
constexpr int Inf = 1e9 + 7;

struct dsu
{
    int par[N];
    dsu()
    {
        memset(par, -1, sizeof par);
    }
    int findpar(int v)
    {
        return par[v] < 0 ? v : par[v] = findpar(par[v]);
    }
} f;

struct Fraction
{
    ll a, b;
    Fraction(ll a = 0, ll b = 1) : a(a), b(b)
    {
        Normalize();
    }

    inline void Normalize()
    {
        ll v = __gcd(a, b);
        a /= v;
        b /= v;

        if (b < 0)
        {
            a = -a;
            b = -b;
        }
    }

    bool operator<(const Fraction &x) const
    {
        return a * x.b < b * x.a;
    }
    bool operator==(const Fraction &x) const
    {
        return a * x.b == b * x.a;
    }
};

ll scheduling_cost(vector<int> p, vector<int> u, vector<int> d)
{
    int n = p.size();
    /*if (count(p.begin(), p.end(), 0) == n - 1)
    {

        vector<int> id(n);
        for (int i = 0; i < n; ++i)
            id[i] = i;
        sort(id.begin() + 1, id.end(), [&](const int &x, const int &y)
             { return d[x] * u[y] < d[y] * u[x]; });

        ll ans(0), time(0);
        for (int i = 0; i < n; ++i)
        {
            time += d[id[i]];
            //cout << id[i] << " " << time << "\n";
            ans += u[id[i]] * time;
        }
        return ans;
    }*/

    ll ans(0), time(0);
    vector<Fraction> ud(n);

    struct Tque
    {
        Fraction x;
        int v;
        Tque(Fraction x = Fraction(0, 1), ll v = 0) : x(x), v(v) {}

        bool operator<(const Tque &a) const
        {
            return x < a.x || (x == a.x && v > a.v);
        }
    };

    priority_queue<Tque> q;

    for (int i = 0; i < n; ++i)
    {
        ud[i] = Fraction(u[i], d[i]);
        q.emplace(ud[i], i);
    }

    while (!q.empty())
    {
        Tque c = q.top();
        q.pop();

        if (!(c.x == ud[c.v]))
            continue;

        if (p[c.v] == -1 || ud[f.findpar(p[c.v])] == Fraction(-1, 1))
        {
            time += d[c.v];
            ans += time * u[c.v];
            ud[c.v] = Fraction(-1, 1);
        }
        else
        {
            int v = f.findpar(p[c.v]);
            ans -= 1ll * u[v] * d[c.v];

            u[v] += u[c.v];
            d[v] += d[c.v];
            ud[v] = Fraction(u[v], d[v]);

            f.par[c.v] = v;

            q.emplace(ud[v], v);
        }
    }

    return ans;
}

void Read()
{
    int n;
    cin >> n;
    vector<int> p(n), d(n), u(n);
    for (int i = 0; i < n; ++i)
        cin >> p[i] >> u[i] >> d[i];

    cout << scheduling_cost(p, u, d);
}

void Solve()
{
}

Compilation message

job.cpp: In function 'void read(T&)':
job.cpp:12:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   12 |     register int c;
      |                  ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 984 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 51 ms 5436 KB Output is correct
6 Correct 104 ms 9656 KB Output is correct
7 Correct 172 ms 15544 KB Output is correct
8 Correct 245 ms 17496 KB Output is correct
9 Correct 258 ms 17464 KB Output is correct
10 Correct 245 ms 17428 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 244 ms 17468 KB Output is correct
13 Correct 216 ms 17500 KB Output is correct
14 Correct 213 ms 17484 KB Output is correct
15 Correct 180 ms 17504 KB Output is correct
16 Correct 244 ms 17508 KB Output is correct
17 Correct 247 ms 17548 KB Output is correct
18 Correct 236 ms 17568 KB Output is correct
19 Correct 167 ms 17564 KB Output is correct
20 Correct 130 ms 17560 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 132 ms 15300 KB Output is correct
5 Correct 165 ms 15288 KB Output is correct
6 Correct 134 ms 15288 KB Output is correct
7 Correct 137 ms 15316 KB Output is correct
8 Correct 138 ms 15332 KB Output is correct
9 Correct 172 ms 15316 KB Output is correct
10 Correct 135 ms 15308 KB Output is correct
11 Correct 133 ms 15336 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 1100 KB Output is correct
5 Correct 7 ms 2064 KB Output is correct
6 Correct 145 ms 15436 KB Output is correct
7 Correct 143 ms 15416 KB Output is correct
8 Correct 146 ms 15660 KB Output is correct
9 Correct 153 ms 15428 KB Output is correct
10 Correct 1 ms 972 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 6 ms 2052 KB Output is correct
13 Correct 7 ms 2064 KB Output is correct
14 Correct 140 ms 15368 KB Output is correct
15 Correct 175 ms 15484 KB Output is correct
16 Correct 143 ms 15396 KB Output is correct
17 Correct 145 ms 15392 KB Output is correct
18 Correct 147 ms 15364 KB Output is correct
19 Correct 153 ms 15568 KB Output is correct
20 Correct 141 ms 15448 KB Output is correct
21 Correct 142 ms 15344 KB Output is correct
22 Correct 149 ms 15448 KB Output is correct
23 Correct 139 ms 15416 KB Output is correct
24 Correct 139 ms 15416 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 269 ms 15408 KB Output is correct
3 Correct 243 ms 17496 KB Output is correct
4 Correct 242 ms 17464 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1076 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 972 KB Output is correct
14 Correct 1 ms 972 KB Output is correct
15 Correct 1 ms 972 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct

Subtask #6
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 984 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 2 ms 1100 KB Output is correct
5 Correct 51 ms 5436 KB Output is correct
6 Correct 104 ms 9656 KB Output is correct
7 Correct 172 ms 15544 KB Output is correct
8 Correct 245 ms 17496 KB Output is correct
9 Correct 258 ms 17464 KB Output is correct
10 Correct 245 ms 17428 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 244 ms 17468 KB Output is correct
13 Correct 216 ms 17500 KB Output is correct
14 Correct 213 ms 17484 KB Output is correct
15 Correct 180 ms 17504 KB Output is correct
16 Correct 244 ms 17508 KB Output is correct
17 Correct 247 ms 17548 KB Output is correct
18 Correct 236 ms 17568 KB Output is correct
19 Correct 167 ms 17564 KB Output is correct
20 Correct 130 ms 17560 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 1 ms 972 KB Output is correct
24 Correct 132 ms 15300 KB Output is correct
25 Correct 165 ms 15288 KB Output is correct
26 Correct 134 ms 15288 KB Output is correct
27 Correct 137 ms 15316 KB Output is correct
28 Correct 138 ms 15332 KB Output is correct
29 Correct 172 ms 15316 KB Output is correct
30 Correct 135 ms 15308 KB Output is correct
31 Correct 133 ms 15336 KB Output is correct
32 Correct 1 ms 972 KB Output is correct
33 Correct 1 ms 972 KB Output is correct
34 Correct 1 ms 972 KB Output is correct
35 Correct 1 ms 1100 KB Output is correct
36 Correct 7 ms 2064 KB Output is correct
37 Correct 145 ms 15436 KB Output is correct
38 Correct 143 ms 15416 KB Output is correct
39 Correct 146 ms 15660 KB Output is correct
40 Correct 153 ms 15428 KB Output is correct
41 Correct 1 ms 972 KB Output is correct
42 Correct 2 ms 1228 KB Output is correct
43 Correct 6 ms 2052 KB Output is correct
44 Correct 7 ms 2064 KB Output is correct
45 Correct 140 ms 15368 KB Output is correct
46 Correct 175 ms 15484 KB Output is correct
47 Correct 143 ms 15396 KB Output is correct
48 Correct 145 ms 15392 KB Output is correct
49 Correct 147 ms 15364 KB Output is correct
50 Correct 153 ms 15568 KB Output is correct
51 Correct 141 ms 15448 KB Output is correct
52 Correct 142 ms 15344 KB Output is correct
53 Correct 149 ms 15448 KB Output is correct
54 Correct 139 ms 15416 KB Output is correct
55 Correct 139 ms 15416 KB Output is correct
56 Correct 1 ms 972 KB Output is correct
57 Correct 269 ms 15408 KB Output is correct
58 Correct 243 ms 17496 KB Output is correct
59 Correct 242 ms 17464 KB Output is correct
60 Correct 1 ms 972 KB Output is correct
61 Correct 1 ms 972 KB Output is correct
62 Correct 1 ms 972 KB Output is correct
63 Correct 1 ms 972 KB Output is correct
64 Correct 1 ms 972 KB Output is correct
65 Correct 1 ms 972 KB Output is correct
66 Correct 1 ms 972 KB Output is correct
67 Correct 1 ms 972 KB Output is correct
68 Correct 1 ms 1100 KB Output is correct
69 Correct 1 ms 1076 KB Output is correct
70 Correct 1 ms 972 KB Output is correct
71 Correct 1 ms 972 KB Output is correct
72 Correct 1 ms 972 KB Output is correct
73 Correct 1 ms 972 KB Output is correct
74 Correct 1 ms 972 KB Output is correct
75 Correct 1 ms 972 KB Output is correct
76 Correct 1 ms 972 KB Output is correct
77 Correct 1 ms 972 KB Output is correct
78 Correct 1 ms 972 KB Output is correct
79 Correct 1 ms 972 KB Output is correct
80 Correct 1 ms 972 KB Output is correct
81 Correct 1 ms 1072 KB Output is correct
82 Correct 1 ms 972 KB Output is correct
83 Correct 1 ms 972 KB Output is correct
84 Correct 1 ms 972 KB Output is correct
85 Correct 1 ms 1080 KB Output is correct
86 Correct 1 ms 1080 KB Output is correct
87 Correct 1 ms 972 KB Output is correct
88 Correct 5 ms 1596 KB Output is correct
89 Correct 7 ms 1808 KB Output is correct
90 Correct 8 ms 2064 KB Output is correct
91 Correct 41 ms 5356 KB Output is correct
92 Correct 88 ms 9600 KB Output is correct
93 Correct 215 ms 17624 KB Output is correct
94 Correct 223 ms 17592 KB Output is correct
95 Correct 202 ms 17552 KB Output is correct
96 Correct 204 ms 17612 KB Output is correct
97 Correct 214 ms 17664 KB Output is correct
98 Correct 198 ms 17540 KB Output is correct
99 Correct 178 ms 17616 KB Output is correct
100 Correct 220 ms 17680 KB Output is correct
101 Correct 243 ms 17620 KB Output is correct
102 Correct 152 ms 17560 KB Output is correct
103 Correct 218 ms 17744 KB Output is correct
104 Correct 256 ms 17552 KB Output is correct
105 Correct 180 ms 17592 KB Output is correct
106 Correct 149 ms 17596 KB Output is correct